If foton mass has a limit as as recently discovered by test, then it obeys the laws of gravity?

Question

If it obey the laws of gravity they light should speed up as it aproaches the Earth by at least 10km/sec?And shouldnt it be attractted to a very large mass causing it to deviate from its original direction by a certain angle?

clarification= source of foton mass limit test
1998 Roderic Lakes Experiment Photon limit mass=7x10^-17 eV
Satelite measument by Charge Composition Explored=6x10^-16 eV
My own caculation before those Experiment was 4.1356692 x10^-15 eV whcih showed close agreement with experiment.So fotons do have mass dont they?

Answer 1

Yes ofcourse, This is what Einstein predicted in his General Theory of relativity. Even light obeys the laws of gravity.
This is some info on General Relativity, for further assistance mail me.
THE GENERAL THEORY
The general theory of relativity is much more complex and difficult to understand than the special theory. It proves the force of Gravitation, as proved by Sir Isaac Newton, wrong. According to Newton, gravity was a force between two bodies, which depends on their respective mass and the distance between them.
The basic idea of general relativity can be illustrated with the help of an imaginary experiment as performed by Einstein. Suppose a lift is at rest in space. If a ball is released within the lift, it will float in space and not fall. If the lift accelerates upward, an observer within the lift will see the ball fall to the floor exactly as it would under the pull of gravity. The ball appears to fall because the floor of the lift, as seen from outside the lift, it accelerates upward toward the ball. All the effects we associate with gravity would be seen by the observer in the lift. Einstein called the phenomenon shown in this experiment the Principle of Equivalence. This principle states that it makes no difference whether an object is acted on by a gravitational force or is in an accelerated frame of reference. The result in both cases will be the same. From this principle, Einstein reasoned that matter in space distorts or "curves" the frame of reference of space. The result of this curvature is what we experience as gravity. The Euclidian or flat geometry was unable to explain the curve, so Einstein used geometries called Riemannian geometry to explain the effect.
According to Newton's theory, a planet moves around the sun because of the gravitational force exerted by the sun. According to the theory of general relativity, the planet chooses the shortest possible path throughout the four-dimensional space- time, which is deformed by the presence of the sun. This shortest possible path is called a geodesic. This may be compared to the fact that a ship or an aeroplane crossing the ocean follows the section of a circle, rather than a straight line, in order to travel the shortest route between two points. In the same way, a planet or light ray moves along the "shortest" line in its four-dimensional world.
So far, three things have been discovered in which Einstein's theory of general relativity receives experimental proof as opposed to the theories of Newton. These differences are not great, but are measurable. In the first place, according to Newton's theory, the planet Mercury moves in an ellipse about the sun. According to Einstein's theory, Mercury moves along an ellipse, but at the same time the ellipse rotates very slowly in the direction of the planet's motion. The ellipse will turn about forty-three seconds of an arc per century (a complete rotation contains 360 degrees of an arc and 360 X 60 X 60 seconds of an arc). This effect is rather small, but it has been observed. Mercury is nearest to the sun and the relativistic effect would be still smaller for other planets.
If we take a picture of part of the heavens during an eclipse of the sun and near the eclipsed sun, and then take another picture of the same part of the heavens a little later, the two photographs will not show identical positions for all the stars. This is so because, according to general relativity, a light ray sent by a star and passing near the rim of the sun is deflected from its original path because the sun's gravity curves space. The effect of gravity on light is also the reason why black holes are invisible. The gravitation in a black hole is so strong that light cannot escape from it.
Physicists have known for more than a hundred years that when some elements are heated to incandescence they give off a pattern of spectral lines (coloured lines), which can be examined through a spectroscope. According to the Einstein theory, the wavelength of light emitted from a massive object will become longer because of gravitation. This results in a shift of the spectral lines towards the red end of the spectrum; this type of red shift is called gravitational red shift. If we examine the spectral lines of an element on our earth with the spectral lines given off by the same element on the sun or on a star, the spectral lines of the element on the sun or star should be very slightly shifted toward the red end of the spectrum, compared with the spectral lines of the same element on our earth. Experiment has confirmed this shift. In 1960, two American physicists, R. V. Pound and G. A. Rebka, Jr., detected the red shift resulting from the earth's gravitational field. They measured the effect of altitude on the frequency of gamma rays.
Conclusion- The theory of relativity is a truly wonderful theoretical concept that cleanly defies many of the facts of classical physics.
How ever scientists are still trying to confirm this theory and some success has also been achieved, as some scientists believe that velocity of light is not same even in vacuum or space.

Answer 2

We don't yet have the technology to determine the effect of gravity on light. The overwhelming majority of physicists today believe that a photon is mass-less. A relativistic mass can be assigned to a photon based on it's wavelength, however since the speed of light is used as a constant in determining the relativistic mass then the data would be messed up if you are trying to prove that the speed of light is not constant. The other problem with measuring the effects of light in our universe is that we are limited in our perspective. We must first determine the speed of gravity and we must be able to compare the speed and direction of light at two different points in the universe to determine what forces are acting on it. Speaking theoretically the answer is yes... if gravity does indeed affect the relativistic mass of a photon then the course and speed of light would be affected by large gravity fields.

Answer 3

Mass is already known to affect light. Eddington's 1919 expedition to South America to observe a solar eclipse gave confirmation of Einstein's theory of relativity, as the deviation of the light from stars near the sun (on the sky) matched the predictions given by GR.
A photon in a gravitational field changes its energy, which causes its wavelength to change, resulting it what is known as 'gravitational redshift'. This also has been measured to great precision and found to be in agreement with the theory.

Do you have a source for photons having a mass limit?
I know that neutrinos have recently found to have mass (albeit very small), but I'd not heard of the photon having mass.

Answer 4

Photons only have REST mass. Under normal circumstances, photons are never at rest, therefore are massless.
http://www.physlink.com/education/askexperts/ae180.cfm

Photons must move within the fabric of spacetime. The shape (geometry) of spacetime is altered by the presence of mass. This 'reshaping' of spacetime is called gravity. Photons are affected by gravity.

Answer 5

solid question! in keeping with risk each and all the human beings suffered from delusions of grandeur, considering that each and everything they threw interior the air looked as though it would love them plenty that they got here flying back to them.